Vivek Express - জেগে ওঠো, সচেতন হও এবং লক্ষ্যে না পৌঁছানো পর্যন্ত থেমো না - Dip

when is chart prepared? four hours before train starting from originating point or four hours before reaching boarding point?
My train starts at 6.30 am from H.Nizamuddin but I have to board it at 9.15 pm at Bhopal. So when will I know the final status of my ticket(WL)?

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